Well, he also had tape of him when he was healthy, making speeches as the head of the NRA.
As for filming him while he was in an apparent state of alzheimers, I don't think it's disgusting at all. This was a man who yelled out "out of my cold, dead hands" right after columbine so you know, too bad. I thought it was great. I hope that all Presidents of the NRA get alzheimers and we can do the same thing to them.
You want to cry over that being one of the most disgusting things you have ever seen, while I say there can be nothing more disgusting that Heston banging out the red meat for the cheap seats after massacres like this one by yelling out to them "out of my cold, dead hands".
He got some of what was coming to him. We all do you know.